import RT-Thread@9217865c without bsp, libcpu and components/net

examples/libc/time.c

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2010-11-17     Bernard      first version
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <finsh.h>
+
+int speed()
+{
+    int i;
+    time_t t;
+
+    printf("%d\n", time(0));
+    for (i = 0; i < 10000000; ++i)
+        t = time(0);
+
+    printf("%d\n", time(0));
+    return 0;
+}
+FINSH_FUNCTION_EXPORT(speed, speed test);